It's amazing how many people put up with terrible software at work, complain about it, are powerless to do anything about it, and simply plod on. Custom tools with very fixable gaps don't get closed; old versions of licensed software don't get upgraded. As long as it continues to work and the problems can be worked around or accepted, they'll keep using it.

I bet that every finance group has a magic Excel spreadsheet that someone built for them years ago. But no one in the office knows how to engineer it anymore, so they keep duct taping little bits here and there to make it adapt to the business years later.